| Electronics > Repair |
| Brushes in an universal motor: opinion on their condition |
| (1/3) > >> |
| golden_labels:
I’m a newbie regarding electric motors. Worn out brushes I’ve seen previously were usually much shorter.(1) Would you consider these to be still fine? These come from an universal motor from a cheap paper shredder. Fixing it is likely not financially reasonable, but I won’t mind learning something. :) Also: yes, they were mounted perpendicular to their original profile. (1) I’ve just realized I forgot to take photos showing the brushes’ size. They are 4×5 mm, currently 10 mm in length. Certainly still pushing well against the commutator. |
| johansen:
Whats the problem? |
| Jeff eelcr:
Most pictures look strangely worn, 1 looks normal. Jeff |
| perieanuo:
change them, pressure and shape taking rotor shape is the key |
| wraper:
Looks weird, as if brushes were misaligned with commutator and one side has no wear at all, the same as 2/3 of commutator. Does the brush size match the slot size properly? And are the brush slots located correctly above the commutator? |
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